Bushing base with mounted nozzles
AssigneeEngelhard-CLAL
InventorsJean-Paul Guerlet, Franck Pouliquen, Daniel Michel
Life of this patent
Estimating the term…
Abstract
The invention relates to a method of manufacturing a bushing baseplate, and to a bushing baseplate. The bushing baseplate is characterized in that it comprises tips (18) constituted by hollow tubular elements of outside diameter slightly smaller than the inside diameter of holes (16) in the plate (12) forming the bushing baseplate, which tips are subjected to a step of being expanded radially relative to their axes. The method is simpler and less expensive.
Claims56
A method of manufacturing a bushing baseplate, the method comprising:
- making a plurality of through holes in a plate that is to comprise the bushing baseplate, each through hole having an inner wall;
- inserting at least one tip comprising a hollow tubular element defining a through duct into each through hole in said plate;
- and
- bonding the at least one tip to said plate by a heat treatment;
- the method being characterized in that an outside diameter of said at least one tip is slightly smaller than an inside diameter of a corresponding one of said plurality of through holes so as to leave a small amount of clearance for appropriate positioning after said at least one tip has been inserted in said corresponding one of said plurality of through holes and whereby prior to said heat treatment each of said at least one tip is subjected to a mechanical expansion of its outside diameter thereby mechanically securing an outer surface of said at least one tip to said inner wall of said corresponding one of said plurality of through holes in said plate;
- and
- whereby said at least one tip and said plate are joined by brazing.
A bushing baseplate, characterized in that said bushing baseplate comprises tips comprising hollow tubular elements initially having an outside diameter slightly smaller than an inside diameter of corresponding holes in a plate forming the bushing baseplate;
- wherein said tips have been mechanically expanded radially relative to their axes;
- and
- wherein said tips and said plate are coined by brazing.
A brazing filler paste, characterized in that said brazing filler paste comprises a metal or metal alloy powder having a melting point lower than a melting point of a metal or metal alloy comprising tips and lower than a melting point of a metal or metal alloy comprising a plate forming a bushing baseplate for making glass fibers or filaments, the brazing filler paste being in the form of a powder dispersed in a polymer binder, having a decomposition temperature greater than 200° C.
A method of manufacturing a bushing baseplate, the method comprising:
- making a plurality of through holes in a plate that is to comprise the bushing baseplate, each of said plurality of through holes having an inner wall;
- inserting at least one tip comprising a hollow tubular element defining a through duct into each of said plurality of through holes in said plate;
- and
- bonding the at least one tip to said plate by a heat treatment;
- the method being characterized in that an outside diameter of said at least one tip is slightly smaller than an inside diameter of a corresponding one of said plurality of through holes so as to leave a small amount of clearance for appropriate positioning after each of said at least one tip has been inserted in said through holes;
- and wherein a continuous line of a brazing filler paste is positioned between a plurality of rows of said at least one tip, wherein a composition of the brazing filler paste is characterized by a melting point at a bonding heat treatment temperature;
- and
- whereby said at least one tip and said plate are joined by brazing.
A method of manufacturing a bushing baseplate, the method comprising:
- making a plurality of through holes in a plate that is to comprise the bushing baseplate, each of said plurality of through holes having an inner wall;
- inserting at least one tip comprising a hollow tubular element defining a through duct into each of said plurality of through holes in said plate;
- providing a brazing filler paste, characterized in that said brazing filler paste comprises a metal or metal alloy having a melting point lower than a melting point of a metal or metal alloy comprising said at least one tip and lower than a melting point of a metal or metal alloy comprising said plate forming said bushing baseplate for making glass fibers or filaments, the brazing filler paste being in the form of a powder dispersed in a polymer binder;
- and
- bonding the at least one tip to said plate by a heat treatment, whereby said at least one tip and said plate are joined by brazing.
A method of manufacturing a bushing baseplate, the method comprising:
- making a plurality of through holes in a plate that is to comprise the bushing baseplate, each of said plurality of through holes having an inner wall;
- inserting at least one tip comprising a hollow tubular element defining a through duct into each of said plurality of through holes in said plate;
- and
- bonding the at least one tip to said plate by a heat treatment;
- the method being characterized in that an outside diameter of said at least one tip is slightly smaller than an inside diameter of a corresponding one of said plurality of through holes so as to leave a small amount of clearance for appropriate positioning after each of said at least one tip has been inserted in said through holes, and whereby each of said at least one tip is subjected to mechanical expansion of its outside diameter thereby mechanically securing an outer surface of said at least one tip to said inner wall of said corresponding ones of said plurality of through holes in said plate;
- and
- further characterized by performing a leakage test.
The method as claimed in claimed 29 wherein said leakage test is performed in the presence of a dye.
A bushing baseplate, characterized in that said bushing baseplate comprises tips comprising a hollow tubular elements initially having an outside diameter slightly smaller than an inside diameter of corresponding holes in a plate forming the bushing baseplate, and which tips have been mechanically expanded radially relative to their axes;
- wherein said tips are brazed to the bushing baseplate by means of a brazing filler paste comprising a metal or a metal alloy whose melting point is lower than a melting point of a metal or metal alloy comprising said tips and lower than a melting point of a metal or metal alloy comprising said plate forming said bushing baseplate.
A bushing baseplate, characterized in that said bushing baseplate comprises tips comprising hollow tubular elements initially having an outside diameter slightly smaller than an inside diameter of corresponding holes in a plate forming the bushing baseplate;
- wherein said tips are brazed to the bushing baseplate by means of a brazing filler paste comprising a metal or a metal alloy whose melting point is lower than a melting point of a metal or metal alloy comprising said tips and lower than a melting point of a metal or metal alloy comprising said plate forming said bushing baseplate.
Dependencies are inferred from the claim text.